U.K. heatwave reveals ancient buried ruins

Weeks of dry, hot weather have exposed the outlines of several archeological sites across the U.K., dating back thousands of years. Drier soil conditions have allowed archeologists to capture aerial photographs of previously hidden features from ancient times, to reveal farms, burial monuments, ditches, walls and vegetation patterns, or cropmarks. The patterns of these structures can be seen from the air as the vegetation dies back in dry conditions.